113121100203 has 8 divisors (see below), whose sum is σ = 151208054928. Its totient is φ = 75224106144.

The previous prime is 113121100201. The next prime is 113121100207. The reversal of 113121100203 is 302001121311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113121100203 - 2¹ = 113121100201 is a prime.

It is a super-2 number, since 2×113121100203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113121100201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47488776 + ... + 47491157.

It is an arithmetic number, because the mean of its divisors is an integer number (18901006866).

Almost surely, 2^113121100203 is an apocalyptic number.

113121100203 is a deficient number, since it is larger than the sum of its proper divisors (38086954725).

113121100203 is an equidigital number, since it uses as much as digits as its factorization.

113121100203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94980333.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 113121100203 its reverse (302001121311), we get a palindrome (415122221514).

The spelling of 113121100203 in words is "one hundred thirteen billion, one hundred twenty-one million, one hundred thousand, two hundred three".